Replace os.path.exists() with Path().stat().st_size > 0

pygmt/tests/test_grd2xyz.py

@@ -1,7 +1,7 @@
 """
 Tests for grd2xyz.
 """
-import os
+from pathlib import Path
 
 import numpy as np
 import pandas as pd
@@ -57,7 +57,7 @@ def test_grd2xyz_file_output(grid):
     with GMTTempFile(suffix=".xyz") as tmpfile:
         result = grd2xyz(grid=grid, outfile=tmpfile.name, output_type="file")
         assert result is None  # return value is None
-        assert os.path.exists(path=tmpfile.name)  # check that outfile exists
+        assert Path(tmpfile.name).stat().st_size > 0  # check that outfile exists
 
 
 def test_grd2xyz_invalid_format(grid):
@@ -85,7 +85,7 @@ def test_grd2xyz_outfile_incorrect_output_type(grid):
         with GMTTempFile(suffix=".xyz") as tmpfile:
             result = grd2xyz(grid=grid, outfile=tmpfile.name, output_type="numpy")
             assert result is None  # return value is None
-            assert os.path.exists(path=tmpfile.name)  # check that outfile exists
+            assert Path(tmpfile.name).stat().st_size > 0  # check that outfile exists
 
 
 def test_grd2xyz_pandas_output_with_o(grid):

pygmt/tests/test_grdclip.py

@@ -1,7 +1,7 @@
 """
 Tests for grdclip.
 """
-import os
+from pathlib import Path
 
 import pytest
 import xarray as xr
@@ -47,7 +47,7 @@ def test_grdclip_outgrid(grid, expected_grid):
             region=[-53, -49, -19, -16],
         )
         assert result is None  # return value is None
-        assert os.path.exists(path=tmpfile.name)  # check that outgrid exists
+        assert Path(tmpfile.name).stat().st_size > 0  # check that outgrid exists
         temp_grid = load_dataarray(tmpfile.name)
         assert temp_grid.dims == ("lat", "lon")
         assert temp_grid.gmt.gtype == 1  # Geographic grid

pygmt/tests/test_grdfill.py

@@ -1,7 +1,7 @@
 """
 Tests for grdfill.
 """
-import os
+from pathlib import Path
 
 import numpy as np
 import pytest
@@ -115,7 +115,7 @@ def test_grdfill_file_out(grid, expected_grid):
     with GMTTempFile(suffix=".nc") as tmpfile:
         result = grdfill(grid=grid, mode="c20", outgrid=tmpfile.name)
         assert result is None  # return value is None
-        assert os.path.exists(path=tmpfile.name)  # check that outgrid exists
+        assert Path(tmpfile.name).stat().st_size > 0  # check that outfile exists
         temp_grid = load_dataarray(tmpfile.name)
         xr.testing.assert_allclose(a=temp_grid, b=expected_grid)
 

pygmt/tests/test_grdgradient.py

@@ -1,7 +1,7 @@
 """
 Tests for grdgradient.
 """
-import os
+from pathlib import Path
 
 import pytest
 import xarray as xr
@@ -48,7 +48,7 @@ def test_grdgradient_outgrid(grid, expected_grid):
             grid=grid, outgrid=tmpfile.name, azimuth=10, region=[-53, -49, -20, -17]
         )
         assert result is None  # return value is None
-        assert os.path.exists(path=tmpfile.name)  # check that outgrid exists
+        assert Path(tmpfile.name).stat().st_size > 0  # check that outgrid exists
         temp_grid = load_dataarray(tmpfile.name)
         xr.testing.assert_allclose(a=temp_grid, b=expected_grid)
 

pygmt/tests/test_grdproject.py

@@ -1,7 +1,7 @@
 """
 Tests for grdproject.
 """
-import os
+from pathlib import Path
 
 import pytest
 import xarray as xr
@@ -53,7 +53,7 @@ def test_grdproject_file_out(grid, expected_grid):
             region=[-53, -51, -20, -17],
         )
         assert result is None  # return value is None
-        assert os.path.exists(path=tmpfile.name)  # check that outgrid exists
+        assert Path(tmpfile.name).stat().st_size > 0  # check that outgrid exists
         temp_grid = load_dataarray(tmpfile.name)
         xr.testing.assert_allclose(a=temp_grid, b=expected_grid)
 

pygmt/tests/test_makecpt.py

@@ -2,6 +2,7 @@
 Tests for makecpt.
 """
 import os
+from pathlib import Path
 
 import numpy as np
 import pytest
@@ -76,7 +77,7 @@ def test_makecpt_output_cpt_file():
     """
     with GMTTempFile(suffix=".cpt") as cptfile:
         makecpt(output=cptfile.name)
-        assert os.path.exists(cptfile.name)
+        assert Path(cptfile.name).stat().st_size > 0
 
 
 def test_makecpt_blank_output():

pygmt/tests/test_triangulate.py

@@ -1,7 +1,7 @@
 """
 Tests for triangulate.
 """
-import os
+from pathlib import Path
 
 import numpy as np
 import pandas as pd
@@ -116,7 +116,7 @@ def test_delaunay_triples_outfile(dataframe, expected_dataframe):
             result = triangulate.delaunay_triples(data=dataframe, outfile=tmpfile.name)
             assert len(record) == 1  # check that only one warning was raised
         assert result is None  # return value is None
-        assert os.path.exists(path=tmpfile.name)
+        assert Path(tmpfile.name).stat().st_size > 0
         temp_df = pd.read_csv(filepath_or_buffer=tmpfile.name, sep="\t", header=None)
         pd.testing.assert_frame_equal(left=temp_df, right=expected_dataframe)
 
@@ -152,7 +152,7 @@ def test_regular_grid_with_outgrid_param(dataframe, expected_grid):
             data=data, spacing=1, region=[2, 4, 5, 6], outgrid=tmpfile.name
         )
         assert output is None  # check that output is None since outgrid is set
-        assert os.path.exists(path=tmpfile.name)  # check that outgrid exists
+        assert Path(tmpfile.name).stat().st_size > 0  # check that outgrid exists
         with xr.open_dataarray(tmpfile.name) as grid:
             assert isinstance(grid, xr.DataArray)
             assert grid.gmt.registration == 0  # Gridline registration

pygmt/tests/test_xyz2grd.py

@@ -1,7 +1,7 @@
 """
 Tests for xyz2grd.
 """
-import os
+from pathlib import Path
 
 import numpy as np
 import pytest
@@ -63,7 +63,7 @@ def test_xyz2grd_input_array_file_out(ship_data, expected_grid):
             outgrid=tmpfile.name,
         )
         assert result is None  # return value is None
-        assert os.path.exists(path=tmpfile.name)
+        assert Path(tmpfile.name).stat().st_size > 0
         temp_grid = load_dataarray(tmpfile.name)
         xr.testing.assert_allclose(a=temp_grid, b=expected_grid)